CN1246910A - Flange sealing in turbing housing admission - Google Patents
Flange sealing in turbing housing admission Download PDFInfo
- Publication number
- CN1246910A CN1246910A CN98802315A CN98802315A CN1246910A CN 1246910 A CN1246910 A CN 1246910A CN 98802315 A CN98802315 A CN 98802315A CN 98802315 A CN98802315 A CN 98802315A CN 1246910 A CN1246910 A CN 1246910A
- Authority
- CN
- China
- Prior art keywords
- mandarin
- becoming
- sealing surface
- section
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/40—Use of a multiplicity of similar components
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Housings (AREA)
- Gasket Seals (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
An admission of a turbine housing. In order to obtain specially high live steam parameters (live steam temperature, live steam pressure) in a steam turbine, the admission (1) of a turbine housing has a flanged joint (4, 5) on the inside comprising multiple through-flow openings (7). Said flanged joint is used to fix a valve housing (2) for control valves (3) and has a sealing surface (15) encompassing each of the through-flow openings (7). In order to provide a particularly reliable sealing, high surface pressing is achieved in the sealing area by providing a shaped outer contour (16) of the sealing surface (15) in the area between adjaent through-flow openings (7) and by appropriately arranging different sized screws (6) along said shaped outer contour (16).
Description
The present invention relates to a kind of steam turbine, the section of becoming a mandarin of the turbine housing of especially industrial turbine engine.
In steam turbine, as the steam expansion work done of flowing medium until being condensed.The power of a kind of like this steam turbine or fluid turbine is for example between 5 to 100MW, and usually as industrial turbine engine.The same with a power station turbine engine, an industrial turbine engine also has the section of becoming a mandarin, and the initial steam of input steam turbine flows in the steam turbine shell by it.By the modulating valve can regulate initial steam of some stream, these modulating valve individually or in groups be arranged on one with valve casing that the section of the becoming a mandarin flange of turbine housing is connected in.For example be connected with the corresponding flange of each through flow hole and from CH 665 450 A5, can know.
When the section of becoming a mandarin is connected with the valve casing flange, especially under high steam parameter situation, that is under high initial steam pressure and high initial steam temperature condition, correspondingly can very high requirement be proposed to the section of becoming a mandarin of turbine housing and the sealing of regulating between the valve casing.
Therefore the objective of the invention is to, the section of becoming a mandarin that provides a kind of turbine housing to use, this section of becoming a mandarin has good especially sealing to superincumbent valve casing is installed.
The objective of the invention is to realize by the described feature of claim 1.Be to realize that so promptly, each through flow hole of distributing to a modulating valve is respectively centered on by a sealing surface in by the flange linkage section between them wherein in the section of becoming a mandarin of turbine housing and the sealing between the modulating valve valve casing.
Mutually corresponding sealing surface belongs to the sealing surface of same all through flow holes of sealing respectively and has the external frame of a shape with a tight waist worthily in the zone between adjacent through flow hole in the section of becoming a mandarin and in the modulating valve valve casing.In order to realize extra high surface pressure in the sealing surface zone, the screw hole arrangement on the described flange linkage section more advantageously meets the external frame of sealing surface on the one hand; Be some tapped holes that the bolt of different size is provided with at least two kinds of mutual different apertures along the external frame of the sealing surface of each through flow hole on the other hand.
Meet in the improvement design of purpose one, be provided with a key-groove engaging piece in the sealing surface zone in the flange linkage section, at this, for example each in 4 through flow holes has the convex shoulder of a supporting valve casing respective flanges respectively.
The advantage that the present invention realizes mainly is by the design to sealing surface, makes sealing surface seal the through flow hole that each cooperates with a modulating valve respectively fully, thereby realizes sealing especially reliably between turbine housing and modulating valve housing.Can in a steam turbine with a corresponding turbine housing, realize extra high live steam parameter thus.Under these circumstances, on the one hand by the sealing surface external frame between the adjacent through flow hole is made shape with a tight waist, by making the bolt of different size worthily, equidistantly be provided with on the other hand, thereby in the sealing surface zone, realize extra high surface pressure along this shape appearance profile with a tight waist.
By accompanying drawing embodiments of the invention are described in further detail below, in the accompanying drawing:
Fig. 1 is the longitdinal cross-section diagram of the turbine housing section of becoming a mandarin that is connected with the modulating valve shell flange;
The flange connections that Fig. 2 obtains after being illustrated in and dissecing by cutting line II-II shown in Figure 1, it has sealing surface in the section of becoming a mandarin through flow hole zone.
Has identical reference character in the mutual corresponding components shown in these two accompanying drawings.
Fig. 1 illustrates the top of a steam turbine shell section of becoming a mandarin 1, the valve casing that has 4 modulating valve 3 in the present embodiment 2 peace seat in the above and by a flange joint 4,5 therewith the top spiral twist solid together.For spiral is twisted the bolt 6 be installed with some screw shaped, they with the corresponding through flow hole of modulating valve 3 quantity 7 zones in distribution be arranged on around the flange.Bolt 6 is threaded with the adpting flange 4 of the section of becoming a mandarin 1.
Each modulating valve 3 of valve casing 2 is heated between the nozzle housing 8 that is fixed on the section of becoming a mandarin 1 inside movably and realizes at the protective tube 9 that being connected of steam side is fixed in the valve casing 2 by respectively and be designed to diffuser with one.Being arranged on movably by being heated in the sealing of steam side between each protective tube 9 and the nozzle housing 8 becomes one group of ring 10 of piston ring structure shape to realize within the nozzle housing 8.
Each protective tube 9 prevents that its housing from suffering to flow through through flow hole 7 through modulating valve 3 along direction shown in the arrow 11 and entering the high temperature of live steam of the section of becoming a mandarin 1 and the influence of high pressure.Under these circumstances, the constant pressure that is full of in the turbine housing section of becoming a mandarin 1 inside in the time of can being formed on steam turbine work in the annular cavity 12 that between the shell wall of the shell wall of each protective tube 9 and valve casing 2 and the section of becoming a mandarin 1, forms.
Sealing between section of becoming a mandarin 1 and valve casing 2 does not have additional seal intermediate layer of material and the relative mutual surface pressure of metallic sealing section to realize by two.Make an annular convex shoulder 13 with key-groove Placement in the fringe region of each through flow hole 7 of the section of becoming a mandarin 1, a corresponding flange profile 14 overlaps with it on the valve casing 2 for this reason.
Fig. 2 illustrates the sealing surface 15 of the adpting flange 4 of the section of becoming a mandarin 1 that forms by convex shoulder 13.The interior profile of sealing face 15 and each meet for the opening profile phase of annular through flow hole 7 in the present embodiment, thereby sealed respectively 15 of these through flow hole 7 are held fully.At this, each through flow hole 7 is littler than the radial bandwidth F1/2 between adjacent through flow hole 7 at the radial bandwidth F of its outside sealing surface 15.The sealing surface of the flange 14 of the adpting flange 5 of valve casing 2 is made into annular, and the bandwidth F of their bandwidth ratio sealing surface 15 is smaller slightly.
Being made into shape with a tight waist in the zone of the appearance profile of sealing surface 15 between through flow hole worthily also conforms to the general arrangement profile of through flow hole 7 to a great extent.The layout that is used for the bolt hole 17,18 of construction bolt 6 also meets appearance profile 16 worthily.Bolt hole 17,18 makes each through flow hole be similar to and is held by bolt hole fully respectively with respect to radially spacing settings such as corresponding through flow holes 7.Back ensures that each through flow hole 7 has sealing especially reliably twisting admittedly for this, and and then makes whole flange connections 4,5 that sealing especially reliably be arranged.
In order to realize extra high surface pressure between the sealing surface of the sealing surface 15 of the section of becoming a mandarin 1 and corresponding with it valve casing 2, bolt hole 17,18 has different diameter d
1Or d
2, correspondingly each bolt 6 is also different thick.Have than major diameter d
2Bolt hole 18 only be arranged on worthily between the through flow hole 7, just in the district with a tight waist of sealing surface 15 appearance profiles 16.At this, be symmetrical arranged 3 corresponding mutually having respectively in the both sides of two external beam lumbar regions than major diameter d
2Bolt hole 18, in the both sides of two middle strand lumbar regions of sealing surface 15 appearance profiles 16 two corresponding mutually diameters only are set respectively then and are similarly d
2Bolt hole 18.
Claims (6)
1. the section of becoming a mandarin of a steam turbine housing, it have one have at least two through flow holes (7) and with a modulating valve (3) valve casing (2) flange flange connecting joint (4,5), wherein, this flange joint (4,5) have a sealing surface (15) that holds each through flow hole (7) fully, the layout that is used to accommodate the bolt hole (17,18) of bolt (6) on this flange joint (4,5) meets the external frame (16) of sealing surface (15).
2. the section of becoming a mandarin as claimed in claim 1, wherein, the sealing surface (15) between adjacent through flow hole (7) has a shape appearance profile with a tight waist (16).
3. as each described section of becoming a mandarin in the claim 1 to 2, wherein, be provided with at least two kinds of different aperture (d along the sealing surface (15) of each through flow hole (7)
1, d
2) some bolts hole (17,18).
4. as the described section of becoming a mandarin of above-mentioned each claim, wherein, in the fringe region of each through flow hole (7), be provided with the convex shoulder profile (13) that is used to support corresponding valve casing (2) flange profile (14).
5. the turbine housing of a steam turbine, this steam turbine has as the described section of becoming a mandarin of above-mentioned each claim.
6. steam turbine, its turbine housing has as each described section of becoming a mandarin in the claim 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19704556.1 | 1997-02-06 | ||
| DE19704556A DE19704556C1 (en) | 1997-02-06 | 1997-02-06 | Steam turbine housing inlet section e.g. for power station turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1246910A true CN1246910A (en) | 2000-03-08 |
| CN1093213C CN1093213C (en) | 2002-10-23 |
Family
ID=7819525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98802315A Expired - Fee Related CN1093213C (en) | 1997-02-06 | 1998-01-27 | Flange sealing in turbing housing admission |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0961869B1 (en) |
| JP (1) | JP4202428B2 (en) |
| CN (1) | CN1093213C (en) |
| BR (1) | BR9807666A (en) |
| DE (2) | DE19704556C1 (en) |
| IN (1) | IN192464B (en) |
| WO (1) | WO1998035139A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452849A (en) * | 2012-05-31 | 2013-12-18 | 株式会社日立工业设备技术 | Housing and turbo machinery having the same and compressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE696942C (en) * | 1938-08-02 | 1940-10-02 | Siemens Schuckertwerke Akt Ges | Flange connection on housings for high pressures and temperatures, especially of steam and gas turbines |
| DE889899C (en) * | 1938-08-16 | 1953-09-14 | Siemens Ag | Steam turbine housing |
| NL88081C (en) * | 1951-11-30 | |||
| CH665450A5 (en) * | 1983-06-09 | 1988-05-13 | Bbc Brown Boveri & Cie | VALVE FOR HORIZONTAL STEAM FEEDING ON TWO HOUSING TURBINES. |
| US4592699A (en) * | 1984-03-05 | 1986-06-03 | Dresser Industries, Inc. | Clamping assembly |
| US5031314A (en) * | 1989-07-28 | 1991-07-16 | Westinghouse Electric Corp. | Method of measuring joint gaps and restoring same |
| DD290703A5 (en) * | 1989-12-22 | 1991-06-06 | Veb Bergmann-Borsig,De | INTRODUCTION OF A SINGLE-SIDED STEAM TURBINE WITH A DUESTRY GROUP CONTROL |
-
1997
- 1997-02-06 DE DE19704556A patent/DE19704556C1/en not_active Expired - Fee Related
-
1998
- 1998-01-27 WO PCT/DE1998/000239 patent/WO1998035139A1/en active IP Right Grant
- 1998-01-27 EP EP98909288A patent/EP0961869B1/en not_active Expired - Lifetime
- 1998-01-27 BR BR9807666-3A patent/BR9807666A/en not_active IP Right Cessation
- 1998-01-27 JP JP53354598A patent/JP4202428B2/en not_active Expired - Fee Related
- 1998-01-27 DE DE59802141T patent/DE59802141D1/en not_active Expired - Fee Related
- 1998-01-27 CN CN98802315A patent/CN1093213C/en not_active Expired - Fee Related
- 1998-02-03 IN IN179CA1998 patent/IN192464B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452849A (en) * | 2012-05-31 | 2013-12-18 | 株式会社日立工业设备技术 | Housing and turbo machinery having the same and compressor |
| CN103452849B (en) * | 2012-05-31 | 2016-04-06 | 株式会社日立制作所 | Housing and the turbomachinery and the compressor that possess housing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4202428B2 (en) | 2008-12-24 |
| EP0961869A1 (en) | 1999-12-08 |
| BR9807666A (en) | 2000-02-15 |
| EP0961869B1 (en) | 2001-11-14 |
| JP2001512544A (en) | 2001-08-21 |
| DE59802141D1 (en) | 2001-12-20 |
| WO1998035139A1 (en) | 1998-08-13 |
| DE19704556C1 (en) | 1998-04-30 |
| CN1093213C (en) | 2002-10-23 |
| IN192464B (en) | 2004-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021023 Termination date: 20110127 |